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It reads as follows:
Air quality reflects the level of air pollution, which is judged by the concentration of pollutants in the air. Air pollution is a complex phenomenon, and the concentration of air pollutants at a given time and place is affected by many factors.
The amount of anthropogenic pollutant emissions from stationary and mobile pollution sources is one of the most important factors affecting air quality, including exhaust from vehicles, ships, aircraft, industrial pollution, residential life and heating, waste incineration, etc. The development density of the city, the topography and landform.
and meteorology are also important factors affecting air quality.
Pollution index
Air Pollution Index.
Air Pollution Index (API) is a method to reflect and evaluate air quality, which is to simplify the concentration of several air pollutants routinely monitored into a single conceptual numerical form, and classify the air quality status and the degree of air pollution.
The air pollution index is based on ambient air quality standards.
and the impact of various pollutants on human health and the ecological environment to determine the classification of pollution index and the corresponding pollutant concentration limit.
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The main contents include "Air Pollution Index", "Top Pollutants", "Air Quality Level", "Air Quality Status", etc.
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It mainly includes the primary pollutant pollution index pollution level Today's reality Tomorrow's forecast.
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Affects air quality.
One of the most important factors affecting air quality is the amount of anthropogenic pollutant emissions from stationary and mobile pollution sources, including exhaust from vehicles, ships, and aircraft, industrial pollution, residential life and heating, and garbage incineration. The development density of the city, the topography and landform.
and meteorology are also important factors affecting air quality.
Aerodynamics in ambient air.
Particulate matter with an equivalent diameter of less than or equal to microns. It can be suspended in the air for a long time, and the higher its concentration in the air, the more serious the air pollution. Although it is only a very small component of the Earth's atmospheric composition, it has a significant impact on air quality and visibility.
and so on.
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Why Air Testing? The reason is that indoor environmental pollution has become one of the killers that seriously affects human health.
The importance of indoor air quality We spend more than 70% of our time in the indoor environment. Good indoor air quality is the most important factor to ensure good health, substandard indoor air can lead to physical discomfort and poor health (such as headache, chest tightness, drowsiness, allergies, eye strain, frequent colds, etc.). Pregnant women, children, the elderly, office workers, and people with respiratory and cardiovascular diseases are more susceptible to poor indoor air quality.
Common Indoor Air Pollutants 1Contamination of building materials. The gypsum board used in modern building decoration breeds bacteria, viruses and other microorganisms; 2.
Pollution caused by enclosed buildings. The fully enclosed building isolates the flow of natural fresh air....
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The three components of air quality** are: air pollution index, primary pollutant swim fluid, and air quality status.
1) What is air quality**?
The environmental information released to the society through the news can reflect the air quality status in a timely and accurate manner, enhance people's attention to the environment, promote people's understanding and support for environmental protection work, improve the environmental awareness of the whole people, and promote the improvement of people's quality of life.
Air quality forecasting is the release of future air quality information, mainly including potential forecast, grade forecast, pollutant concentration forecast, etc.
In recent years, China's air quality deterioration events are frequent, and air quality forecasting is conducive to weakening or preventing the occurrence of serious air quality pollution events, therefore, air quality forecasting has attracted the attention of business departments and academia, Beijing, Shanghai and other cities, as well as Tsinghua University, Sun Yat-sen University and other institutions, Chinese Academy of Sciences and other scientific research institutions, have developed in this work.
2) What is the Air Pollution Index (API)?
It is to simplify the concentration of several air pollutants routinely monitored into a single numerical form, and to express the degree of air pollution and the air bending and grinding air quality status in different levels.
In September 2008, the Ministry of Environmental Protection issued the "Technical Regulations on Urban Air Quality and Forecasting" (second draft for comments), which added ozone and carbon monoxide, which have not yet been implemented.
The top pollutants vary from region to region.
Due to the recent stability of the atmospheric structure, the high humidity of the near-surface air, the weak ground pressure field, the low wind, and the low night temperature, the fog appears. The air quality is the worst because the atmosphere is in a stable state, with neither vertical movement nor horizontal flow, which prevents the pollutants in the air from diffusing, resulting in haze.
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